Let’s be honest, the market for sex-toys is probably never going to be filled to capacity: there will always be a new idea which makes it into production, which excites our imagination, which needs trying out just to see whether it is the one, or whether we have to carry on with our search for the ultimate. But there is one thing which most of us have, which most of us can use, which is always ready and more than willing. It can be taken on holiday, into the office, through airport security and no one thinks twice when they see it.